hoffstetter



March 8, 1932. c. H. HOFFSTETTER 1,348,719

METAL PLATE STRUCTURE Filed April 15, 1929 i J r 3/ Haj.-

A f/VENTOR. 7 I a,

ATTORNEYS.

' bolts 4 have Patented lVlar. 8,1932

PATENT OFFICE UNITED STATES CARL H. HOFFSTETTER, OF

VANIA ERIE, PENNSYLVANIA, ASSIGNOR FACTURING COMPANY, OF ERIE, PENNSYLVANIA, A. CORPORATION OF 'ro onm srovn MANU- PENNSYL- METAL PLATE STRUCTURE Application filed April 15,

Inmany devices, such as metal furniture including stoves, it is desirable to furnish the article with an exterior frame plate. In the stove art, such a plate is illustrated by the surrounding base plate which carries the stove body and to which the legs are attached. In securing the body and legs to this plate it has been common, in the past, to use stove bolts and the heads of these stove bolts are arranged outside the plate. In order to perfect the finish of the stove it has not been uncommonto conceal these bolts with covering plates and by other devices. In the present construction, the bolts are rigidly secured to the inner surfaces of such plates and the parts within the plate are secured to the bolts in the usual manner by nuts, thus providing for the convenient assembly of the devices and at the same time providing an unbroken outer surface of the plate for finishing in any desired manner. Features and details ofthe invention will appear from the specification and claim. r

A preferred embodiment of the invention is illustrated in the accompanying drawings as follows Fig. 1 shows a front elevation of a stove.

Fig. 2 a section on the line 22 in Fig. 1.

Fig. 3 a View of the parts before assembly.-

Fig. 4 a detached view of the bolt before it is secured to the plate.

Fig. 5 an enlarged view of the bolt as secured to the plate.

Fig. 6 a view indicating the manner of welding.

1 marks the stove body, 2 the surrounding base plate, and 3 legs for the stove. Securing heads 5. These heads have a direction of the bolt flat surface 6 facing the 7 opposite the bolt and a convex surface shank;

This form of bolt may be welded to a plate in the manner generally illustrated in Fig. 6.

8 marks an electrode having a bolt-receiving socket 9, the electrode having a surface 10 engaging the under-surface 6 of the bolt head making practically a contact throughout this surface. The plate 2 is fixed on the convex surface of the head and an electrode 11 arranged in 1929. Serial No. 355,127.

tact of the convex surface 7 and the plate. The metal here fuses and as the head de-' presses it rapidly increases the current capacity and the welding area expands usually. to a diameter about equal to that of the bolt.

With the bolt so, attached the bolts may be assed through openings on the inner parts of the structure as at openings 12 on the body and 13 on the legs. These openings where corner structures should be slightly elongated so as to permit the short projecting bolts to be passed through. the openings. Nuts 14 are provided clamping the parts together. The bolts give a rigid construction, the heads slightly bracing them laterally and leaving the outer surface unobstructed so that these surfaces may be finished in any manner desired, thus saving cover plates and other devices for this purpose. Thus a more rigid structure is provided' and a structure of less parts.

What I claim as new is In an article of manufacture, the combination of an exteriorally faced corner plate; inwardly projecting bolts on each extension of the corner plate having heads with their centers welded to the inner surface of the plate, the axes of the bolts being at right angles to the corner plate extensions and the axes of the bolts on one extension being in converging'relation with-the axes of the bolts on the other extension of the corner plate; and a corner member having extensions from the corner, one extension being rigid relatively to the other and having elongated slots through which the bolts ex-.

tend.

In testimony, whereof I have hereunto set 

